What is the electron arrangement for gallium

How can you get the knowledge of minerals chemical makeup or use? A. To determine how to break down minerals B. To determine the color of minerals C. To classify minerals D. To identify minerals

An atom of selenium (Se) forms a monatomic ion. Which of the following ions does is most likely form? Possible answer choices: Se^2+ Se^6- Se^6+ Se^2-

Which are assumed to be constant while using the combined gas law? pressure number of moles volume and moles of gas pressure and temperature

Why the mass of a rusted nail is greater then the nail before it rusted?

Describe what it means for something to be an acid.

Calculate the voltage if the current is 0.5 A and the resistance is 2.0 Ω.

Moseley's changes to the periodic table were based mainly on what part of the scientific process

Which of the following precautions is important when using a Bunsen burner or Meker burner? a. Set up your work space so that wires and cables cannot accidentally make contact with the flame or hot glassware and meltb.

What explains the fact that no machine is 100 percent efficient? A. Friction transforms mechanical energy into thermal energy. B. Thermal energy is transformed into mechanical energy by friction. C.

For each example of a phase change, identify whether heat is absorbed from the surroundings or released into the surroundings. A popsicle melts on a hot day. Rubbing alcohol evaporates from the surface of the skin.